<template>
  <div class="sona">
    <h3>sona</h3>
    <button @click="btnClick">触发</button>
  </div>
</template>
<script>
export default {
  methods: {
    btnClick() {
      this.$bus.$emit('atob', '我是sona')
    }
  }
}
</script>
<style lang="scss" scoped>
.sona {
  width: 200px;
  height: 200px;
  border: 2px solid red;
}
</style>
